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Finding the Fourth Proportional to 309,199.99, 426,713.52 and 173,277.76

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Solution

The fourth proportional to 309,199.99, 426,713.52 and 173,277.76 is: 239,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,199.99 : 426,713.52 = 173,277.76 : x
  2. Step 2: Convert to fraction form
    309,199.99/426,713.52 = 173,277.76/x
  3. Step 3: Cross multiply
    309,199.99x = 426,713.52 × 173,277.76
  4. Step 4: Simplify right side
    309,199.99x = 73,939,960,773.75
  5. Step 5: Solve for x
    x = 73,939,960,773.75/309,199.99
  6. Step 6: Final answer
    x = 239,133.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.